A potential difference (p.d.) across a resistor causes an electric current to flow through it. Both the potential difference across the resistor and its resistance can be altered. Which option describes two changes that will both decrease the current in the resistor?
decrease p.d., decrease resistance
decrease p.d., increase resistance
increase p.d., decrease resistance
increase p.d., increase resistance
132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.